123279017659216 has 40 divisors (see below), whose sum is σ = 247663676954624. Its totient is φ = 59383643633280.

The previous prime is 123279017659183. The next prime is 123279017659243. The reversal of 123279017659216 is 612956710972321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557168331 + ... + 557389546.

Almost surely, 2^{123279017659216} is an apocalyptic number.

123279017659216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123279017659216 is an abundant number, since it is smaller than the sum of its proper divisors (124384659295408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123279017659216 is a wasteful number, since it uses less digits than its factorization.

123279017659216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114558139 (or 1114558133 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 123279017659216 in words is "one hundred twenty-three trillion, two hundred seventy-nine billion, seventeen million, six hundred fifty-nine thousand, two hundred sixteen".